All Photos(2)



SYBR® Green I nucleic acid gel stain

greener alternative

10,000 × in DMSO

safer gel stain, DNA stain, SYBR green gel dye
CAS Number:
MDL number:

Quality Level


 mL sufficient for 100 mini-gels

greener alternative product characteristics

Designing Safer Chemicals
Learn more about the Principles of Green Chemistry.


10,000 × in DMSO

greener alternative category


storage temp.


Looking for similar products? Visit Product Comparison Guide

General description

SYBR® Green I is a proprietary asymmetrical cyanine dye, which is used to detect nucleic acids. It consists of a N-alkylated benzothiazolium or benzoxazolium ring system, that is joined by a monomethine bridge to a pyridinium or quinolinium ring system. SYBR Green I binds to the minor groove of dsDNA and is excited at a wavelength of 480 nm. It has a peak fluorescence emission of 520 nm.


SYBR® Green I nucleic acid gel stain has been used for:
  • the quantification of dsDNA
  • to stain DNA in polymerase chain reaction (PCR)
  • for comet assay technique
  • to assess spermatozoon membrane integrity
  • for visual inspection of DNA amplified by loop-mediated isothermal amplification (LAMP)
  • as a fluorescent dye in flow cytometry
  • real-time quantitative reverse transcription-polymerase chain reaction (qRT-PCR) for staining reverse-transcribed cDNA

Features and Benefits

  • An ultrasensitive stain for post-electrophoresis staining of dsDNA in agarose or polyacrylamide gels
  • It can also detect ssDNA and RNA in denaturing agarose/formaldehyde and polyacrylamide/urea gels without any pre-washing steps
  • It is less mutagenic than ethidium bromide in Ames tests
  • It provides 50-100 times greater detection sensitivity than ethidium bromide for oligonucleotides
  • Useful for many applications with a limited amount of DNA
  • The binding of SYBR® Green I to DNA does not inhibit the activity of many common restriction endonucleases, including Hind III and EcoR I
  • Removal of this stain in-gel digestion and ligation techniques is not needed
  • SYBR Green I is a greener alternative product to ethidium bromide for staining

Storage and Stability

Store the product at –20 °C. The diluted Staining Solution may be stored, protected from light, either at 2–8 °C for several weeks or at room temperature for 3–4 days.

Legal Information

U.S. Patent No. 5,436,134. Licensed from Molecular Probes, Inc.
SYBR is a registered trademark of Life Technologies

Storage Class Code

10 - Combustible liquids



Flash Point(F)

201.2 °F - closed cup

Flash Point(C)

94 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  5. Will Product S9430, SYBR® Green I nucleic acid gel stain, stain DNA that contains deaza-G modified nucleotides in place of guanisine?  

    Product S9430, SYBR® Green I nucleic acid gel stain, will poorly stain DNA containing deaza-G modified nucleotides in place of guanisine.  A way around this issue would be to use a mixture of deaza-G modified nucleotides with guanisine.  This will allow for better staining. 

  6. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Shear-resistant hydrogels to control permeability of porous tubular scaffolds in vascular tissue engineering
Tresoldi C, et al.
Materials Science and Engineering, C, 105, 110035-110035 (2019)
I Ortiz et al.
Animal reproduction science, 187, 74-78 (2017-10-19)
The aim of this study was to compare sperm DNA fragmentation of frozen-thawed epididymal sperm of dogs using the SCSA (Sperm Chromatin Structure Assay) and SCDt (Sperm Chromatin Dispersion test). For this purpose, epididymis from neutered dogs were minced and
Loop mediated isothermal amplification of 5.8S rDNA for specific
detection of Tritrichomonas foetus
Jorge Oyhenart
Veterinary Parasitology, 193 (2013)
The in vitro effect of nonylphenol, propranolol, and diethylstilbestrol on quality parameters and oxidative stress in sterlet (Acipenser ruthenus) spermatozoa
Shaliutina O, et al.
Toxicology in vitro, 43, 9-15 (2017)
P A Morin et al.
BioTechniques, 19(2), 223-228 (1995-08-01)
A method for resolving and visualizing genotypes for simple sequence repeat loci on short (20 cm) polyacrylamide gels is described. This method makes use of a modified vertical electrophoresis cell to allow rapid electrophoresis without variation in migration rates due


Hot Start dNTP protocol to reduce non-specific amplification

Protocol using hot start dNTPs. Method includes modified nucleoside triphosphates that block DNA polymerase nucleotide incorporation during hot start PCR to increase specificity. Compatible with a variety of PCR reagents.

SeqPlex Enhanced DNA Amplification Kit (SEQXE) Protocol

The SeqPlex DNA Amplification Kit for whole genome amplification (WGA) is designed to facilitate next-generation sequencing (NGS) from extremely small quantities or from degraded/highly fragmented DNA

Complete Whole Transcriptome Amplification Kit Protocol (WTA2)

WTA2, a Whole Transcriptome Amplification (WTA) method, allows for representative amplification of nanogram quantities of total RNA in less than 4 hours without 3-bias

SEQR - SeqPlex RNA Amplification Kit Protocol

The SeqPlex RNA Amplification kit provides a method for amplification of total RNA or isolated mRNA prior to entry into the workflows of the commonly used deep sequencing platforms.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service